St. Nazianz, WI Weather & Growing Conditions
Today
84°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of rain showers between 3pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny. High near 84, with temperatures falling to around 82 in the afternoon. Heat index values as high as 87. Southwest wind 8 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 8 to 15 mph SW | 37% |
| Tonight | 63°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 10 mph W | 83% |
| Wednesday | 77°F | Chance Rain Showers | 6 mph ENE | 24% |
| Wednesday Night | 58°F | Chance Rain Showers | 1 to 5 mph S | 22% |
| Thursday | 80°F | Slight Chance Rain Showers then Mostly Sunny | 2 to 6 mph NNE | 7% |
| Thursday Night | 59°F | Mostly Clear | 6 mph SSW | 3% |
| Friday | 83°F | Sunny | 5 to 12 mph SW | 0% |
| Friday Night | 64°F | Mostly Clear | 8 to 12 mph SSW | 6% |
| Saturday | 85°F | Sunny then Slight Chance Showers And Thunderstorms | 9 to 14 mph SW | 15% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 7 to 12 mph SW | 36% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 8 to 13 mph WSW | 36% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 5 to 10 mph WSW | 50% |
| Monday | 80°F | Chance Rain Showers | 5 to 8 mph SE | 32% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 5 to 8 mph NNE | 40% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Nazianz, WI
Last spring frost
May 1
First fall frost
Oct 14
Growing season
162 days
Hardiness zone
5b
Explore more for St. Nazianz, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Chilton, Wi (12.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.